Syamsudhuha, Syamsudhuha, M. Imran, Ayunda Putri, and Rike Marjulisa. 2026. “A New Slope Averaging Technique in Heun’s Method: Combining Harmonic and Root Mean Square Means”. Journal of the Indonesian Mathematical Society 32 (3):1813. https://doi.org/10.22342/jims.v32i3.1813.